Ozone air purifier



y 8, 1958 l R. TOADER 2,842,491

OZONE AIR PURIFIER Fil ed April 27, 1956 INVENTOR.

5/ T Rumuws TDHDBR F1 BY '9 W v HTTURNE'I oeh f wia dsscri I a i 9 h pn rdetl..q ai 1 1 Wh h various. QY t sa.e l eqt rti :f rthi. he a ics t ruyn nssjtq ne a ial-P r :ofthisdisclosurez k y y 1 sheet material. o v r o In Figs. 2 and 3 the device is shown withthe cover. (3. removed to expose internal parts. f-

vice has a sheet metal member P bent to form part of the walls of the casing. This portion of the casing in tree j Romulus Toade r, New York, N. Y., assignor to Royal Industries," Inc.', Springfield; Ohio, av corporation of Oliio V I v Application April-27, 1956, Serial Na. 58 15067 i'cla m'. (Cl. zoo-s17 j I {This invention relates; to ozone generators and, more particularly, has reference to a device of this type so arranged that it 'p'rovides a maximumgeneration of ozone x in. relation. to .the amount. of felectrical energy "used for V generating the ozone.

I Aprincipal object of the present inventionis ,to provide an ozone generating device wherein 'a particular.

' spacing of-the electrodes is used in the device to increase efiiciency of ozone generation.

QAffurther object of importance is to provide a lpo'rt zone generating device that will be capableof wide 'rafige' of adjustments in respect..tojthe amount of power supplied to the electrodes thereof,-and in respect l'to the rate. of ozone generation; that will be compact,

have relatively "simplecircuitry, and will provide ready Y e accessibility to the coniponentparts thereof F10 1 th;r c yin shei si a f. the v nan 't bjectsancladvanta es thereof, reference be had d accompanying drawings,

feat e iq 11. 1

Fig. l is a' persepective' view of the casing housing the "entir a cerd ast teeinte t m r FigilA is an end view of meanin Fig. 2 is a'front elevational view of the device with the cover of the casing removed. 7 a

Fig.3 is a sectional view taken on lines' 3-3 of Fig. '2.

- Fig. 4 isa perspective view of'an electrode plate em j ployed in the device- Fig. is a perspective v ew of an electrode support q member. v 'Fig. 6 is a fragmentary perspective view of'an elec- F trode plate;

as shown in Figs. 1 and The cover includes the sloping front portions 11, 12, a fiat bottom 14, a flat top 15 and a top rear depending flange 16.

The cover has horizontal louvers 17, 17 and 17" on front, top, and bottomrespectively. The louvers are.

formed by pressed or struck out portions of the metal 'cludes the flat rear plate 20 and the perpendicularly f disposed side plates 21, 22. The side plates have louvers o F L. 'Flanges 23, 24 are formed perpendicular to the side plates at their front edges and serve assupports for The body of the'de V plate member P .are enclosed V 'jtricalparts'ofthedevice. I Y 4 A flat metal plate 26 is'secured, to'rear plate 20 by "having a laminated rectangular iro'n core 30 on which ufactureatrelativelylow cost; thatwill permitfa or flap 57 as best shown inljFigs the; front cover plates 11 and 12. Within this folded screws 25. Secured to plate 26 by suitable bolts 27 are a pair of angle plates 28 and 29. Attached to these angle plates is a high voltage step-up transformer T- are wound primary coil-31 andv secondary coil 32., A wire wound variable resistor orrheostat 33 is mounted Y on side plate 22. The resistor is adjusted by knob'34 slides over the exposed portion of the wire winding 36 of the resistor. The resistor. has protruding contact fingers 37, 38. To contact 37 are secured one end of capacitor 40 and' the end of power wire 41. Wires 41, 42, and ground lead 43 areenclosed inpower cable 44 which is terminated by a plug 45. The ground lead 43 extends outside the plug and terminates in alug 46. Ground lead 43. is connected to angle plate28 which grounds the core 30 of the-transformer. Wire 42 .is connected to one end of'primary coil 31. Theother end of theprimary coil is connected to contact-38 via a lead 48. The resistor winding 36 terminates: in the contact finger 38 and sliding contact 35 terminates-gin nt One end of thesecondary'winding 321is,grounded toangle plate 28.; The other end of the secondary windin iswa ee e a ead'w e 51- to b i member The bridge member is a generally U-shaped strip of metal which is secured to; the foraminous electrode plates 55'and 56. Each of theseplateshas a'struck outtoirgue H o V Eandm6fp Thefiaps areattached to t he bridge n iember.-52}.by screws'58.

ll@l rfQ 1 which: exten s ta ve o tion-@2119 f m a groove or trough in which the end of an electrodemay beseatedg g 'Ele'ctrodesi65 an pose a acent e ectrodes SS and 56, respectively. A mica sheet 67 isdispos'ed between each pair of electrodes. The plastic members" are provided so that electrodes 55 and-56-may be angularly disposed to the flat electrodes and '66, respectively. The tapered spaces Sbetween the'electrodes are wedge-shaped cavities whichare-wide'st at the ends A plastic insulation section, is mounted over the ends of each pair of electrodes and the protruding end of the mica sheet 67.

Theseveral electrodes'are each formed fromaflatsheet, of metal having apertures 72' as shown in Figs. 3, 4

and'6; Electrodes 65 and 66 each have a bent flanged pedestal end 73'which is secured'to the plate 26 by screws 74'. The electrodes 65 and 66 are thus grounded,

while electrodes 55 and 56 are connected electrically to rated in the housing of resistor 33 and is ganged. to the rotor shaft 39 so-that the resistor element 36 :is'set at maximum resistance just before the switch is closed or opened. The resistance element 36 is in series with primary winding 31. Thus the power input to thetransformer is readily controlled by means of adjustment knob 34. The secondary winding 32 of the'transformer,"

is connected across-the parallel arrangement of the elec- 2,842,491; o l Pate ntedJuly s, 1958 the several working elec- Capacitor 40 is connected across power trode pairs 55, 65 and 56, 66. The connection of electrodes 65 and 66 is to ground through plate 26 and is common to the electrical connection of the grounded end 59 of the secondary winding.

In operation, the louvers in the top, bottom, sides and front of the casing insure free circulation of air therethrough. Alternating current power is supplied to the ozone generating device via cable 44. When the resistor 33 is turned on a high alternating voltage is applied across the two ozone generator units which include elcctrodes 55, 65 and 56, 66. As the slider 3-5 is adjusted a corona discharge field develops between each electrode and its adjacent electrode. The maximum electric discharge takes place between lines having optimum spacing of the electrodes for the particular voltage applied, humidity of the air in cavities S, and other ambient conditions. The'electrical discharge ionizes the air circulating through the cavitia S and generates ozone thereby. Two hundred or more milligrams of ozone per hour can be generated by the device described, depending on the number and size of the electrode pairs, intensity of applied voltage, etc.

The present device is arranged as a portable apparatus for use in homes, offices, hospitals, factories, laboratories, and similar places where deodorizing and purification of air by ionization and generation of ozone is desired. If desired, the device may be mounted in a stationary position on a flat surface and for this purpose the mounting feet F shown in Fig. 1A are provided. The device may also be hung in an elevated position on a wall or partition and for this purpose the elongated apertures H shown in Fig. 2 on the rear plate are provided. If desired, an electric fan can be mounted in or near the device to increase the circulation of air through the casing.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claim.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent 1s:

An ozone generator device, comprising a generally rec- 4 tangular hollow sheet metal casing, said casing having a removable cover for the bottom, front and top thereof, and a bent plate forming sides and rear thereof, said sides and cover having a plurality of louvers therein to permit a free flow of air through the casing; a flat conductive plate secured to the rear of the casing, a plurality of pairs of electrodes secured to said flat plate; each pair of electrodes having a fiatrsheet of insulating material disposed therebetween, an insulating spacer having a groove therein disposed between the fiat sheet and one inclined electrode of said pair of electrodes with an edge of the inclined electrode being disposed in the groove to define a wedge-shaped cavity between adjacent electrodes of said pair of electrodes, each of said electrodes being formed from a substantially flat apertured metal sheet, an electrical bridge member connecting the inclined electrodes of the pairs of electrodes, the other electrode of each of said pairs being grounded through said fiat conductive plate; a transformer having alaminated iron core secured to said fiat conductive plate, primary and secondary coils Wound on said core; a capacitor, and an electrical cable enclos- 'ing-thr'ee lead wires extending through one side of the casing, said capacitor being connected across two of said lead wires, one of the two lead wires being connected to one end of said primary coil, the other of the two lead wires being connected to the other end of said primary coil one end of said secondary coil being connected to said inclined electrodes through said electrical bridge member, the other end of said secondary coil and the third wire of the three lead wires being grounded to said fiat conductive plate.

References Cited in the file of this patent UNITED STATES PATENTS 996,850 Guiley July 4, 1911 1,743,202 Forrest Ian. 14, 1930 1,965,187 Hartman July 3, 1934 2,113,913 Cragun Apr. 12, 1938 2,140,618 Conley Dec. 20, 1938 2,260,831 Daily Oct. 28, 1941 FOREIGN PATENTS 233,418 Great Britain May 6, 1925 

